Hello. I want to build this sound card oscilloscope: https://makezine.com/projects/sound-card-oscilloscope/
However my sound card has 1.3V inputs and the circuit in the example is made to limit the voltage to the soundcard to 0.7V (because most soundcard inputs are 0.7V).
I want to modify the circuit to allow more voltage. Can anyone suggest what components I can use to replace the diodes? The original uses 1N4148 which is a common switching diode.
I'm an electronics newbie and I'm assuming that the switching diodes in the schematic allow voltage to pass between the + and - side if the voltage goes over 0.7V. I could very well be wrong and that is the reason I ask here before making the circuit because I don't want to blow something up or start a fire. If I'm correct I need to find diodes that pass 1.3V in stead of the 0.7V.
Thanks in advance for any help.
However my sound card has 1.3V inputs and the circuit in the example is made to limit the voltage to the soundcard to 0.7V (because most soundcard inputs are 0.7V).
I want to modify the circuit to allow more voltage. Can anyone suggest what components I can use to replace the diodes? The original uses 1N4148 which is a common switching diode.
I'm an electronics newbie and I'm assuming that the switching diodes in the schematic allow voltage to pass between the + and - side if the voltage goes over 0.7V. I could very well be wrong and that is the reason I ask here before making the circuit because I don't want to blow something up or start a fire. If I'm correct I need to find diodes that pass 1.3V in stead of the 0.7V.
Thanks in advance for any help.